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Multiplying Mixed Numbers by Whole Numbers

Directions: Make the smallest (or largest) product by filling in the boxes using the whole numbers 1-9 no more than one time each.

Hint

Hint

How can we tell whether it would be better to put the larger numbers in the whole number, numerator, or denominator?

Answer

Answer

The current best answer for largest product is 8 7/1 * 9. The current best answer for smallest product 2 3/9 * 1

Source: Robert Kaplinsky

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